Carr, jr ctal

ABSTRACT

TRATION IN THE FILTER TOW OF A TOBACCO SMOKE FILTER ROD BY ADDING A PREDETERMINED AMOUNT OF FLUORESCENT AGENT TO A PREDETERMINED AMOUNT OF PLASTICIZER; APPLYING TO THE FILTER TOW PRIOR TO ITS BEING FORMED INTO A FILTER ROD THE BONDING PLASTICIZER AND THE ADDED FLUORESCENT AGENT; AND MEASURING THE INTENSITY OF FUORESCENCE FROM A PREDETERMINED PORTION OF ONE END OF THE SUBSEQUENTLY FORMED FILTER ROD. THE MEASUREMENT MADE HAD THUS BEEN FOUND TO BE REPRESENTATIVE OF A PERCENTAGE OF BONDING PLASTICIZER IN THE ENTIRE LENGTH OF FILTER ROD. tHE BONDING PLASTICIZER APPLIED

DEFENSE/E PUELEEATIUN UNITED STATES PATENT OFFICE Published at therequest of the applicant or owner in accordance with the Notice of Dec.16, 1969, 869 O.G. 687. The abstracts 01 Defensive Publicationapplications are identified by distinctly numbered series and arenrrnnged chronologically. The heading 0t each abstract indicates thenumber of pages of specification, including claims and sheets ofdrawings contained in the application as originally filed. The files ofthese applications are available to the public for inspectionnndreproduction may be purchased for 30 cents a sheet.

Defensive Publication applications have not been examined as to themerits of alleged invention. The Patent Oflice-rnakes no assertion as tothe novelty of the disclosed subject matter.

PUBLISHED FEBRUARY 4, 1975 T931,005 METHOD OF MONITGRING PLASTICIZERCON- CENTRATION IN FILTER TOW BY MEASURING FLUORESCENCE INTENSITYEtllbert S. Carr, Jr., 4043 Skyland Drive 37664, and Gerald P. Morie,2317 Briar Cliff Road 37660, both of Kingsport, Tenn.

Filed May 6, 1974, Scr. No. 467,523 Int. Cl. Gilln 21/16 U.S. Cl.250-302 1 Sheet Drawing. 12 Pages Specification Method of monitoring thebonding plasticizer concentration in the filter tow of a tobacco smokefilter rod by adding a predetermined amount of fluorescent agent to apredetermined amount of plasticizer; applying to the filter tow prior toits being formed into a filter rod the bonding plasticizer and the addedfluorescent agent; and measuring the intensity of fluorescence from apredetermined portion of one end of the subsequently formed filter rod.The measurement made has thus been found to be representative of apercentage of bonding plasticizcr in the entire length of filter rod.The bonding plasticizer applied to the filter tow may be preferablytriacetin and the fluorescent agent added to the bonding plasticizer maybe preferably butylated hydroxyanisole (BHA). More specifically, thebonding plasticizer may be a member of a group consisting of glyccryltriacetate (triacetin), ethylene glycol diacetatc, triethylene glycoldiacetate, propylene glycol diacetate, di(mcthoxyethyDphthalatc,dimethyl phthalate, and tricthyl citrate. The fluorescent agent may be amember of the group consisting of propyl 3,4,5-trihydroxybenzoate,3,5-di-t-butyl-4-hydroxymethyl benzene, 2,5-bis(S,7-di tertamylbcnsonasol-Z-yl) thiophone, riboflavin, butylatcd hydroxyanisole,benzoic acid, Z-acetonaphthone, benzophcnonc, propyl p-hydroxybenzoateand 2,4,S-trihydroxybutyrophenone. With respect to the composition ofglyccryl triacetate (triacctin) and butylated hydroxyanisole (BHA), 1000parts of BHA may be added to one million parts of triacetin.

Feb. 4, 1975 E 5 CARR, JR ETAL T93L05 METHOD OF IONITORING PLASTICIZERCONCENTRATION IN FILTER TOW BY MEASURING FLUORESCENCE INTENSITY FiledMay 6, 1974 SOURCE FILTER DETECTOR 6 I I f M S S METER AMPLIFIER KEY M-MIRROR s SLIT G GRATING MONOCHROMATOR

